Green River Water Hardness & Quality Report (2026)
Water Hardness
5.9 grains per gallon
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
193 mg/L
Est. Daily Cost
$0.27
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Green River, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Green River | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.3 yrs | 8.5 yrs | -26% |
| Washing Machine | 9.8 yrs | 12 yrs | -18% |
| Water Heater | 11.5 yrs | 15 yrs | -23% |
Regional Water Comparison
How Green River compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Green River, Wyoming | 101.5 mg/L | 1.7 ppt | 🟡 Moderately Hard | reservoir |
| Rock Springs, Wyoming | 102.5 mg/L | 1.7 ppt | 🟡 Moderately Hard | reservoir |
| Logan, Utah | 203.5 mg/L | 2.9 ppt | 🔴 Very Hard | mixed |
| Conda, Idaho | 74.5 mg/L | 1.7 ppt | 🟡 Moderately Hard | reservoir |
| Fruita, Colorado | 135 mg/L | 4.8 ppt | 🟠 Hard | reservoir |
National Benchmark
How Green River compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Green River | 101.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Green River's Water Unique?
Local geology and source profile
Green River, Wyoming, in Sweetwater County — the Sweetwater County seat adjacent to Rock Springs on the Green River in southwest Wyoming — receives its water from the City of Green River Water, drawing from the Green River (Sweetwater County) through the southwest Wyoming distribution.
The moderately soft 101.5 mg/L hardness and TDS of 193 mg/L are remarkably soft for Wyoming's semi-arid interior basin — the Green River at Sweetwater County benefits from the high-altitude Bridger wilderness snowmelt dilution moderating the Eocene Green River Formation's calcareous lacustrine contacts (compare Casper WY: 189.5/499 harder on the North Platte supply; Green River significantly softer from the altitude-diluted Rocky Mountain snowmelt supply). The Green River at Sweetwater County — Eocene Green River Formation (calcareous lacustrine — primary hardness contributor), Cretaceous Mesa Verde Group (slightly calcareous — secondary contributor), and Quaternary Rocky Mountain snowmelt alluvium (insoluble — primary dilutant).
At 101.5 mg/L with TDS 193, Green River's water is moderately soft. Appliances last well with standard maintenance. Annual descaling is appropriate. The PFAS level of 1.7 ppt is very low — no filtration urgently required, warrants routine monitoring only. Green River's PFAS level is among the lowest in the dataset, reflecting its remote Rocky Mountain location.
Geology & Source: Green River in Sweetwater County draws from the City of Green River Water on the Green River (Sweetwater County, southwest Wyoming) — the Green River at Sweetwater County drains the Wyoming Basin (Eocene Green River Formation — calcareous lacustrine) and Cretaceous Mesa Verde Group (slightly calcareous) — Wyoming Sweetwater County Green River Eocene calcareous lacustrine supply produces moderately soft water at 101.5 mg/L with TDS 193 mg/L.